Shelf Life Testing &
Stability Studies
Scientifically determine your product's expiration date with accredited shelf life testing protocols. Accelerated and Real-Time stability programs anchored on PJLA-accredited Water Activity, pH, Peroxide Value, and Free Fatty Acid methods.
Validate with a Trusted Shelf Life Testing Lab
AGT Food Labs provides accurate stability data so you can determine how long your product maintains its quality, safety, and nutritional value. Whether you are launching a new product or changing packaging, our stability program produces the data needed to print "Best By" or "Expiration" dates with confidence.
We monitor the "Spoilage Trio" — microbial growth, chemical degradation (rancidity), and organoleptic changes — to predict exactly when your product fails. Chemical-stability anchors (Water Activity, pH, Peroxide Value, Free Fatty Acids, Titratable Acidity) are run in-house under our PJLA scope.
Scope note: Our PJLA ISO/IEC 17025:2017 accreditation (Cert L24-482-R2) covers the core chemical stability anchors used in shelf life testing — Water Activity (AOAC 978.18, SOP 044), pH (AOAC 981.12, SOP 036), Peroxide Value (AOCS Cd 8b-90, SOP 067), Free Fatty Acids (AOCS Ca 5a-40, SOP 063), and Titratable Acidity (SOP 064). Microbial counts (APC, Yeast & Mold), vitamin profiling, and sensory testing are coordinated through our LAAF / ISO 17025 accredited partner laboratory network and consolidated into one shelf-life report.
Our Shelf Life Testing Process
From protocol design to the final report, we guide you through determining your product's shelf life.
Why Shelf Life Testing is Critical
Retailers like Walmart, Whole Foods, and Costco require scientific proof of your expiration dates. Guessing your shelf life can lead to premature spoilage, costly recalls, and consumer illness.
A professional stability study not only ensures regulatory compliance but also protects your brand reputation by ensuring customers experience your product exactly as intended — from the first day to the last.
Our Shelf Life Testing Services
Comprehensive aging protocols matched to your timeline and product type.
Accelerated Shelf Life Testing (ASLT)
Need to launch quickly? We use the Arrhenius Equation (Q10 Model) to predict shelf life. By incubating samples at elevated stress (e.g., 35°C, 45°C, or 55°C), we increase the rate of chemical degradation to simulate months of aging in just weeks.
The Science: Based on a standard Q10 factor, we mathematically project your expiration date, allowing you to get to market faster while waiting for real-time validation.
- New Product Launches
- Dry Goods (Low Water Activity)
- Fats & Oils (PV / FFA tracking)
- Rapid Prototyping
Real-Time Stability Studies
The only way to truly validate an accelerated prediction. Real-time shelf life testing stores your samples for the full duration under strict ICH Climatic Zone conditions (e.g., 25°C / 60% RH for ambient) to mirror your exact supply chain environment.
We recommend running real-time studies in parallel with ASLT to confirm your label claims satisfy regulatory and retailer audits.
- Perishable Foods (Dairy, Meat)
- Final Regulatory Validation
- Frozen Products
Microbial, Chemical & Physical Analysis
We don't just wait for mold. We use a holistic approach to define "End of Life" by monitoring the three pillars of quality degradation:
- Chemical (PJLA): Water Activity, pH, PV, FFA, Titratable Acidity
- Microbial (Partner): APC, Yeast, Mold
- Nutrient (PJLA + Partner): Minerals + Vitamins
- Physical: Texture, Color Fading
Industries We Serve
Shelf life testing for the food & beverage categories where stability is the highest commercial risk.
Analytical Parameters Monitored
Validated AOAC and AOCS methods used to track degradation across each pull point.
| Test Parameter | Method Reference | Scope | Purpose in Shelf Life |
|---|---|---|---|
| Water Activity (Aw) | AOAC 978.18, SOP 044 | ✅ PJLA-Accredited | Predicts microbial stability & staling risk |
| pH Stability | AOAC 981.12, SOP 036 | ✅ PJLA-Accredited | Monitors fermentation or spoilage shifts |
| Peroxide Value (PV) | AOCS Cd 8b-90, SOP 067 | ✅ PJLA-Accredited | Measures initial oxidative rancidity in fats & oils |
| Free Fatty Acids (FFA) | AOCS Ca 5a-40, SOP 063 | ✅ PJLA-Accredited | Measures hydrolytic rancidity (off-flavors) |
| Titratable Acidity | AOCS Ca 5a-40, SOP 064 | ✅ PJLA-Accredited | Acid balance & spoilage in dairy, sauces, beverages |
| Aerobic Plate Count (APC) | AOAC 990.12 | ✅ PJLA-Accredited | General bacterial growth indicator |
| Yeast & Mold | AOAC 2014.05 | ✅ PJLA-Accredited | Primary spoilage in acidic / dry foods |
| Vitamin Profiling (HPLC) | AOAC 2012.22 | ✅ PJLA-Accredited | Verifies vitamin label claims over time |
| Sensory & Physical | ASTM Guidelines | 🤝 Partner Network | Texture analysis, color fading, separation |
Methods marked ✅ are run in-house under PJLA ISO/IEC 17025:2017 accreditation (Cert L24-482-R2). Methods marked 🤝 are coordinated through our LAAF / ISO 17025 accredited partner laboratory network and consolidated into a single signed report.
Industry Compliance
Meeting the strict requirements of retailers and regulators.
Retailer Standards
Our shelf life testing reports meet the verification standards required by major retailers like Whole Foods, Walmart, Costco, and Amazon.
Challenge Studies
Pathogen-inoculation challenge studies (Listeria / Salmonella) are coordinated through our partner microbiology network and integrated into the stability report.
Packaging Integrity
We assess container-closure integrity to ensure seal failures do not compromise the product during its shelf life window.
Frequently Asked Questions
Common questions about Shelf Life and Stability Testing.
Which shelf life testing methods does AGT run in-house under PJLA accreditation?
How long does shelf life testing take?
What is the Q10 Factor?
Do you test shelf life "After Opening"?
What is the difference between "Best By" and "Use By"?
How many samples do I need to send?
Do you test for rancidity in oils and nuts?
Don't Guess Your Expiration Date.
Get scientific validation for your product with our accredited shelf life testing program.
Request a Stability Quote